The setup is simple: the doll head is positioned to align with the driver's body from the camera's viewpoint. This allows the fake head to consistently appear focused on the road, while the actual driver can look away or even sleep.

In reality, Tesla's advanced driver-assistance systems, full self-driving (FSD) and autopilot, are not fully autonomous driving technologies. Despite common misconceptions and some company promotions, these features, when activated, require active driver supervision and do not transform the vehicle into a self-driving car.

To ensure driver supervision when full self-driving or autopilot is active, Tesla's driver monitoring system uses an in-cabin camera. This camera tracks head position and eye movement, ensuring the driver remains focused on the road.

However, some drivers attempt to bypass safety limits, leaving the car to control itself without any supervision. This includes dangerous behaviors such as climbing into the back seat or sleeping while the features are engaged.

The use of doll heads, fake hands, or dummy seatbelt buckles to deceive the system highlights a concerning misuse of technology by many drivers. This behavior stems from a critical misunderstanding: viewing full self-driving as a completely autonomous system, rather than merely a driver-assistance feature.

By My Anh (according to Electrek, QQ)